A force of 15 N is acting on a particle of mass 3 kg towards north and a force of 20 N is acting on another particle of mass 2 kg towards east. The acceleration of the centre of mass of the two particle system is
A
7 m/s2
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B
5 m/s2
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C
1 m/s2
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D
zero m/s2
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Solution
The correct option is B 5 m/s2 →a1=153^λ=5^j→a2=202^i=10^i→acom=m1→a1+m2→a2m1+m2=15^l+20^i5=3^i+4^j|→acom|=5m/s2Hence,optionBiscorrectanswer.